Ro un ding-machine



(No Model.)

A. B. WAGNER.- ROUNDING MACHINE.

PatentedJune 27, 1893.

ventor a. 4. m 7m Witnesses.-

THE mums PEIERS 00., magma, wumflu'ron. n c.

UNITED STATES PATENT OFFICE.

ALFRED B. WAGNER, OF MIAMISBURG, OHIO.

ROUNDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 500,519, dated June 27, 1893.

I Application filed August 10,1892- 'Serial No. 442,710. (No model.)

' nying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a front elevation and Fig. 2 is a vertical section on line 0000 Fig. 1, and Fig. 3 is a detail view of one of the parts.

This invention has relation to certain new and useful improvements in rounding machines, the object being to provide a machine of this character with se1f-adjusting holding and centering arms or guides for the stick or stock being operated upon, whereby the latter is automatically held in proper relation to the cutter heads during the operation of rounding.

With this object in View, the invention consists in the novel construction and combination of parts, all as hereinafter described and pointed out in the claims.

Referring to the accompanying drawings, the letter A designates the frame of the machine, having bearings a, a, in which is supported a shaft 13, carrying cutter heads 0, C, of ordinary construction.

D, D, designate the self adjusting guides or clamps which constitute my invention, and consist each of two curved arms d, (I, one of which extends partially over each of the circumferential edges of the cutter head, as shown. Said arms at their lower ends have extensions f, which are pivoted to the frame at f, below which point they cross each other, as shown. Connected to the lower extremities of these extensions are a series of levers g arranged in lazy-tongs fashion, and supporting at their lower ends a weight F. Said levers g,

where they cross eachother at the point g, are connected by a' loose bolt h. This bolt plays in a slot h in the brace H of the frame, or in a block secured to said frame, and serves to steady the levers, and cause the guides to spread equally from the center of the cutter heads. this weightwill be to draw the clamps toward each other in the position shown on the left hand side of Fig. 1. The stick or stock to be operated upon, is inserted at one end in a block 70 on an extension is of the frame, and its other end is forced down between the clamps. The stick or stock is then drawn through the clamps to receive the action of the cutters, being kept squarely to the center of the head. It will also be apparent that the clamps or guides are self-adjustable to different sizes of stock. By the use of these devices, the difficulty experienced in machines of this character in properly holding the stick or stock is obviated.

Having described this invention, what I claim, and desire to secure by Letters Patent, is-

1. In a rounding machine, the combination with the cutter heads, of the self-adjusting clamps or guides arranged thereover, said clamps or guides comprising the curved arms pivoted to the frame and having downward extensions, the lazy-tong levers connected to said extensions, the guide bolt, and the weight supported by said levers, substantially as specified.

2. The herein described attachment for rounding machines, comprising the arms or clamps having the downward crossed extensions, the lazy-tong levers connected to said extensions, the guide bolt playingin a slot in the frame, the weight supported by said levers, and the holding block, substantially as specified.

In testimony whereof I afiix my signature in presence of two witnesses. a

' ALFRED B. WAGNER. Witnesses.

AMos K. CLAY, J. O. MYERS.

It will be observed that the action of 

